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Thread: Dominator or HP EFI

  1. #11
    Join Date
    Dec 2009
    Location
    Connecticut
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    Quote Originally Posted by rand0b View Post
    So for my wheel speed sensor, I know it's a 2-wire connection. So do I have to use 2-wires on the I/O cable?
    No, just the one signal wire (IPU Speed/Freq) is routed to the I/O Auxiliary Harness.
    Dominator Auxiliary Harnesses: https://www.holley.com/products/fuel...efi/harnesses/

    To connect up to 4 Inputs & Outputs to the EFI Main Harness, use I/O Auxiliary Harness 558-400.
    Eight Wire I/O Auxiliary Harness Connector Pin-Out (also in the Holley EFI Wiring Manual - LINK):
    Pin A...A12...White/Blue (Input #1) F,5,2,T,H,G
    Pin B...A3....White/Red (Input #2) F,5,2,T,H,G
    Pin C...A13...White/Black (Input #3) F,5,G
    Pin D...A4....White/Green (Input #4) F,5,G
    Pin E...B12...Gray/Yellow (Output #1) H,P+
    Pin F...B11...Gray/Red (Output #2) H,P+
    Pin G...B10...Gray/Black (Output #3) G,P−
    Pin H...B3....Gray/Green (Output #4) G,P−
    http://documents.holley.com/199r10516.pdf (Holley 558-400 I/O Auxiliary Harness Instructions)

    The 558-400 I/O Auxiliary Harness is 20 feet long.
    It's "plug & play" into the main harness, and an easy way to connect common things like an electric cooling fan (LINK).
    This I/O Auxiliary Harness isn't required for the optional oil & fuel pressure transducers, which are also "plug & play" into the main harness.
    The oil & fuel pressure transducers are used for Data Monitoring, Data Logging and setup Outputs based on oil & fuel pressure.

    Or would I just run one to that, and then ground the other cable from the sensor?
    Yes, the other wire is grounded.
    http://forums.holley.com/showthread....3598#post53598 (Wiring Additional Sensors - HP & Dominator ECUs)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  2. #12

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    Awesome. That last LINK looks like the piece I've been looking for! Thanks!

  3. #13
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    Dec 2009
    Location
    Connecticut
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    You're welcome. That page does get a lot of hits.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  4. #14

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    Quote Originally Posted by Danny Cabral View Post
    I'm naturally aspirated and I'm using 7 Inputs & 12 Outputs. Most people who suspect they'll need more I/O, usually do.
    Can you go into a little detail here so that guys like us can further anticipate our needs and not purchase the wrong system? Thank you!

  5. #15
    Join Date
    Nov 2014
    Location
    Ont. Canada
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    I have a Dominator EFI on a N/A engine. For my inputs I have:
    1) A/C Kick
    2) ECU Log Trigger
    3) Transmission Pressure (Transducer)
    4) Crankcase Vacuum (Transducer)
    5) 94 Octane, I tuned my engine to run on 89 octane (Knock Sensors). Then I can activate an Timing Advanced Table when I put 94 octane fuel in it.

    Outputs:
    1) Electric Vacuum Pump for crankcase vacuum.
    2) A/C Fans
    3) Rad Fans
    4) Shift light
    5) A/C Pump
    6) Knock Sensor Warning Light (LED)
    7) Transmission Cooler Fan

    Danny, have you looked at the new line of LS Terminator X systems? They really cut the price down on them.

  6. #16
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    Dec 2009
    Location
    Connecticut
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    Quote Originally Posted by 81 TransAm View Post
    Danny, have you looked at the new line of LS Terminator X systems? They really cut the price down on them.
    Yeah, but it's not a Dominator ECU.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  7. #17
    Join Date
    Nov 2014
    Location
    Ont. Canada
    Posts
    1,438

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    Ya, they look like a light version of the HP & Dominator ECUs.

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